Physics
Scientific paper
Aug 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jatp...55.1433h&link_type=abstract
Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 55, no. 10, p. 1433-1435, 1437-1448.
Physics
13
Eiscat Radar System (Europe), Electron Energy, Ionospheric Electron Density, Plasma Oscillations, Radio Frequency Heating, Backscattering, Electron Density Profiles
Scientific paper
Attention is given to heater induced electron temperature and electron density temporal fluctuations observed in EISCAT backscatter data at Tromso. These fluctuations are also accompanied by bulk changes in electron temperature and electron density. The maximum heating effect is observed near 190 km. Data from two separate experiments on February 19 and 26, 1987 are presented. It is shown that the coupled electron temperature and electron density oscillation is driven by chemical perturbation rather than the self-focusing instability found in transport-dominated regions. Spectral analysis of the data indicates that the strongest fluctuations have periods of 2-5 min with scale sizes perpendicular to the magnetic field of between 6 and 10 km.
Honary Farideh
Jones Bernard T.
Kopka Helmut
Robinson Terry R.
Stocker A. J.
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